Nathan manufactured this beautiful puzzle in 1990. Although the title in the box is just Picture Gallery, the real title of the painting is Gallery with Views of Modern Rome, by Giovanni Paolo Panini.
The puzzle is COMPLETE (6000 pieces). The pieces and the box are in very good condition.
It measures 106.5 x 155 cm. The reference number is 553761.
This is the largest version of this puzzle, although there are also two different 5000 pieces versions: one by Educa, and another one by Ravensburger. At the same time, Giovanni Panini painted the Gallery with Views of Ancient Rome.